You must stop at an intersection, whether it is or is not marked with a stop sign. All traffic must stop.

When a school bus stops for passengers on a two-lane roadway, all traffic from both directions must stop.When a school bus stops for passengers on a four-lane roadway, all traffic from both directions must stop.When a school bus stops for passengers on a two-lane roadway with turning lane, all traffic from both directions must stop.When a school bus stops for passengers on a four-lane roadway with center turning lane, all traffic from both directions must stop.If physical barriers such as grassy medians, guide rails or concrete median barriers separate oncoming traffic from the bus, motorists in the opposing lanes may proceed with caution without stopping.